CN219139577U

CN219139577U - Double-layer pin shaft with inner and outer sleeves

Info

Publication number: CN219139577U
Application number: CN202223492100.XU
Authority: CN
Inventors: 李俊; 龙永伟
Original assignee: Sichuan Construction Machinery Group Co Ltd
Current assignee: Sichuan Construction Machinery Group Co Ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-06-06
Anticipated expiration: 2032-12-27

Abstract

The utility model relates to an inner and outer sleeve double-layer pin shaft, and belongs to the technical field of tower crane connectors. The structure comprises an outer shaft sleeve (1), an inner pin shaft (2) and a positioning pin (4), wherein radial holes (6) are formed in one ends of the outer shaft sleeve (1) and the inner pin shaft (2), and the positioning pin (4) can penetrate into the radial holes (6) so that the outer shaft sleeve (1) and the inner pin shaft (2) are connected into a whole. The structure is designed in a split mode through the pin shaft, the weight of a single part is greatly reduced, manual installation is facilitated, the installation weight is reduced, single independent installation can be realized, and manpower expenditure and installation cost are reduced. The problem that the installation of the round pin axle on the tower machine is generally carried out in the sky, sometimes only can install through the manpower, because the round pin axle size is heavy, needs two people to cooperate the construction to go on, and the installation cost is high is solved.

Description

Double-layer pin shaft with inner and outer sleeves

Technical Field

The utility model relates to an inner and outer sleeve double-layer pin shaft, and belongs to the technical field of tower crane connectors.

Background

In the installation process of the existing tower crane, a plurality of pin shafts are used as connecting pieces to connect adjacent structures, and the installation of the pin shafts on the existing tower crane is generally carried out in the air, so that when the pin shaft installation can not be carried out in an auxiliary mode by other auxiliary hoisting means, the pin shafts can only be manually put into the pin shaft holes after being lifted by manpower, when the pin shafts are large in size and heavy in weight, one person can pick up the pin shafts and install the pin shafts very difficultly, two persons are required to carry out cooperation construction, the number of installation personnel is increased, and the installation cost is increased.

Disclosure of Invention

The technical problem to be solved by the utility model is that the installation of the pin shaft on the tower crane is generally carried out in the air, sometimes only by manpower, and because the pin shaft is large in size and heavy in weight, two persons are required to be matched for construction, and the installation cost is high.

The technical scheme adopted for solving the technical problems is as follows: the double-layer pin shaft comprises an outer shaft sleeve, an inner pin shaft and a positioning pin, wherein radial holes are formed in one ends of the outer shaft sleeve and the inner pin shaft, and the positioning pin can penetrate into the radial holes, so that the outer shaft sleeve and the inner pin shaft are connected into a whole.

Wherein, in the above-mentioned structure the locating pin penetrates the end and is provided with the domatic for whole penetrating the end and be round platform column structure.

Wherein, in the above-mentioned structure, radial hole both ends on the interior round pin axle have seted up the groove.

In the structure, the end, far away from the radial hole, of the inner pin shaft is provided with a shaft shoulder, the end part of the outer sleeve is provided with a step hole, and a rubber gasket is arranged in the step hole.

Wherein, in the above-mentioned structure outer axle sleeve penetrates the end and is connected with the direction round platform, and the direction round platform can dismantle with outer axle sleeve and be connected.

Further, in the structure, the guide round table is clamped with the outer shaft sleeve or connected with the outer shaft sleeve through threads or riveted.

The beneficial effects of the utility model are as follows: this structure adopts split type structural design, in the installation, install outer axle sleeve in the round pin shaft hole earlier, install the back in place, install interior round pin axle again, thereby divide into two parts with the heavier round pin axle of weight, greatly reduced the installation weight of single piece structure, thereby reduce the installation degree of difficulty, installation whole journey only needs one personnel can accomplish the installation, and then reduce installer's quantity, and the increase of installation procedure cost compared installer's quantity is to lower much, synthesize and compare current round pin axle installation, can effectively reduce installation cost.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic diagram of the full section structure of the utility model.

Fig. 3 is a schematic view of the outer hub mounting structure of the present utility model.

Fig. 4 is a schematic view of an installation structure of the inner pin shaft of the present utility model.

Fig. 5 is a schematic view of the structure of the positioning pin after installation.

Fig. 6 is a schematic view of the structure of the inner pin of the present utility model.

Fig. 7 is a schematic diagram of another configuration of fig. 1 in full section according to the present utility model.

Marked in the figure as: the novel high-strength steel wire rope is characterized in that the novel high-strength steel wire rope is provided with an outer sleeve, a guide circular table, an inner pin shaft, a pin shaft hole, a positioning pin, a groove, a radial hole, a shaft shoulder and a rubber gasket, wherein the outer sleeve is 1, the guide circular table is 11, the inner pin shaft is 2, the pin shaft hole is 3, the positioning pin is 5, the groove is 6, the radial hole is 7, the shaft shoulder is 7, and the rubber gasket is 9.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 7, the inner and outer sleeve double-layer pin shaft comprises an outer sleeve 1, an inner pin shaft 2 and a positioning pin 4, wherein one ends of the outer sleeve 1 and the inner pin shaft 2 are respectively provided with a radial hole 6, and the positioning pin 4 can penetrate into the radial holes 6, so that the outer sleeve 1 and the inner pin shaft 2 are connected into a whole. It can be understood by those skilled in the art that the outer shaft sleeve 1 and the inner pin shaft 2 can be fixed into a whole through the positioning pin 4, so that the supporting effect of the double-layer pin shaft is realized. In the installation process, the outer shaft sleeve 1 is firstly installed in the pin shaft hole 3, and then the inner pin shaft 2 is installed after the outer shaft sleeve 1 is installed in place, so that the pin shaft with heavier weight is divided into two parts, the installation weight of a single structure is greatly reduced, the installation difficulty is reduced, the installation can be completed by only one person in the whole installation process, the problem that relative sliding along the axial direction exists between the outer shaft sleeve 1 and the inner pin shaft 2 after the outer shaft sleeve 1 and the inner pin shaft 2 are installed is solved, the abrasion between the outer shaft sleeve 1 and the inner pin shaft 2 can be accelerated, the situation that the outer shaft sleeve 1 and the inner pin shaft 2 are separated in the use process can also occur, the pin shaft is influenced, the radial holes 6 are formed in the outer shaft sleeve 1 and the inner pin shaft 2 aiming at the risk, and the positioning pins 4 are penetrated to carry out axial and radial limiting between the outer shaft sleeve 1 and the inner pin shaft 2, the problem that circumferential movement and the axial movement occur between the outer shaft sleeve 1 and the inner pin shaft 2 in the use process is avoided, and the firmness of the structure is ensured.

Preferably, in the above structure, the penetrating end of the positioning pin 4 is provided with a slope, so that the whole penetrating end is in a truncated cone-shaped structure. It can be understood by those skilled in the art that when the positioning pin 4 is installed, when the radial hole 6 on the outer shaft sleeve 1 and the radial hole 6 on the inner pin shaft 2 are not aligned, the positioning pin 4 is difficult to install, so that the penetrating end of the positioning pin 4 is provided with a slope surface, the whole penetrating end is in a truncated cone-shaped structure, and the positioning pin 4 can smoothly penetrate into the radial hole 6 under the action of the penetrating end.

Preferably, in the above structure, grooves 5 are formed at two ends of the radial hole 6 on the inner pin shaft 2. It will be appreciated by those skilled in the art that when the positioning pin 4 is inserted in the structure in the same way, when the radial holes 6 on the outer shaft sleeve 1 and the radial holes 6 on the inner pin shaft 2 are not aligned, the positioning pin 4 is difficult to install, and the structure further preferably has grooves 5 formed at two ends of the radial holes 6 on the inner pin shaft 2. The groove 5 is arranged to guide the positioning pin 4 to smoothly penetrate into the radial hole 6.

Preferably, in the above structure, the end of the inner pin shaft 2 far away from the radial hole 6 is provided with a shaft shoulder 7, the end of the outer shaft sleeve 1 is provided with a step hole, and a rubber gasket 9 is arranged in the step hole. It can be appreciated by those skilled in the art that in order to increase the versatility of the inner pin shaft 2 and enable the inner pin shaft 2 to be used independently, the shoulder 7 is provided at the end of the inner pin shaft 2, so that the inner pin shaft 2 can be used independently. In order to facilitate the matching with the outer shaft sleeve 1, it is preferable that a stepped hole matched with the upper circumferential shoulder 7 of the inner pin shaft 2 is arranged at the corresponding end of the outer shaft sleeve 1, and in order to reduce the influence of impact force between the outer shaft sleeve 1 and the inner pin shaft 2 on the stepped hole, a rubber gasket 9 with the thickness of 1-2mm is preferably arranged in the stepped hole, and the rubber gasket 9 is sleeved outside the inner pin shaft 2.

Preferably, in the above structure, the penetrating end of the outer sleeve 1 is connected with a guiding circular table 11, and the guiding circular table 11 is detachably connected with the outer sleeve 1. As will be appreciated by those skilled in the art, when the outer sleeve 1 and the inner pin 2 are disengaged from each other, since the front end of the inner pin 2 is located in the outer sleeve 1, the outer sleeve 1 is divided into 2 sections, specifically, the guiding circular table 11 is connected to the penetrating end of the outer sleeve 1, the outer wall of the guiding circular table 11 is an inclined plane, and the guiding circular table 11 is detachably connected to the outer sleeve 1, when the outer sleeve 1 and the inner pin 2 are required to be disengaged from each other, the guiding circular table 11 is unscrewed, so that the guiding circular table 11 is disengaged from the outer sleeve 1, and then the front end of the inner pin 2 can be directly knocked by a hammer, so that the outer sleeve 1 and the inner pin 2 are axially moved, and the outer sleeve 1 and the inner pin 2 are better disengaged from each other. And the whole that outer axle sleeve 1 and interior round pin axle 2 are constituteed can produce the interaction force under the exogenic action when using, under this case, when outer axle sleeve 1 and interior round pin axle 2 need be released, the required external force of outer axle sleeve 1 and interior round pin axle 2 relative movement can be bigger, and after outer axle sleeve 1 and interior round pin axle 2 relative movement a section distance, interaction force between outer axle sleeve 1 and interior round pin axle 2 can show and diminish, thereby the required external force of relative movement between outer axle sleeve 1 and interior round pin axle 2 will reduce greatly, so set up direction round platform 11 here, make when just beginning to exert external force to interior round pin axle 2, the front end of knocking the hammer can direct action in interior round pin axle 2, make installer can exert external force to interior round pin axle 2's front end better. Meanwhile, the guide round table 11 can be adapted to all outer sleeves 1 with the same diameter, in this case, in the installation process, the outer sleeves 1 with the matched quantity can be made according to the requirement, the guide round table 11 only needs to be made into a plurality of outer sleeves, and the guide round table 11 can be matched with different outer sleeves 1 for use in the installation process, for example, in the installation process of a tower crane, 20 pin shafts with the diameter of 100mm are required, and in the production process, only 20 outer sleeves 1,4-5 guide round tables 11 are required to be made, so that the production length of a single pin shaft can be greatly reduced, the material cost of the pin shaft is further reduced, and the material cost saved by the pin shaft is greater than the processing cost of threads due to the fact that the pin shaft is made of 40Cr material commonly used, so that the installation cost of the tower crane can be reduced.

Preferably, in the above structure, the guide circular table 11 is clamped or screwed or riveted with the outer sleeve 1. It will be appreciated by those skilled in the art that the present structure is merely preferable for connecting the guide boss 11 to the outer sleeve 1, and preferably, a clamping, screwing, riveting or the like is adopted, and particularly, an optimal mode can be determined according to external conditions.

Claims

1. The double-layer pin shaft of the inner sleeve and the outer sleeve is characterized in that: including outer axle sleeve (1), interior round pin axle (2) and locating pin (4), outer axle sleeve (1) and interior round pin axle (2) one end all are provided with radial hole (6), and locating pin (4) can penetrate in radial hole (6) for outer axle sleeve (1) and interior round pin axle (2) link into an integrated entity.

2. The inner and outer double-layer pin shaft according to claim 1, wherein: the penetrating end of the locating pin (4) is provided with a slope surface, so that the whole penetrating end is of a truncated cone-shaped structure.

3. The inner and outer double-layer pin shaft according to claim 1, wherein: grooves (5) are formed in two ends of a radial hole (6) in the inner pin shaft (2).

4. The inner and outer double-layer pin shaft according to claim 1, wherein: the inner pin shaft (2) is provided with a shaft shoulder (7) far away from the end of the radial hole (6), the end part of the outer sleeve (1) is provided with a step hole, and a rubber gasket (9) is arranged in the step hole.

5. The inner and outer double-layer pin shaft according to claim 1, wherein: the penetrating end of the outer sleeve (1) is connected with a guide round table (11), and the guide round table (11) is detachably connected with the outer sleeve (1).

6. The inner and outer double-layer pin shaft according to claim 5, wherein: the guide round table (11) is clamped with the outer sleeve (1) or connected with the outer sleeve through threads or riveted.